PSI - Issue 41

Jelena Djokikj et al. / Procedia Structural Integrity 41 (2022) 670–679 Author name / Structural Integrity Procedia 00 (2019) 000–000

676

7

Force [N]

0 100 200 300 400 500 600 700

PC PETG PLA

0

2

4

6

a)

b)

Displacement [mm]

Fig. 5. Tensile strength test a) force-displacement graph for tensile strength; b) specimens after the conducted tests

Table 2. Values obtained from the tensile strength analysis

Specimen F ��� ���� Δl ��� ���� σ ��� ����� ε ��� 1 597,95 1,416 59,7954 0,04721

������� 442,707617 432,6994872 443,5104721 311,3209088 293,3946219 312,9584283 282,0741669 268,4399378 256,5606257

PLA

2 3 1 2 3 1 2 3

583,49 621,15 618,36 605,40 625,79 484,11 469,69 476,20

1,465 1,475 2,732 2,722 2,703 2,229 2,010 2,289

58,3485 62,1149 61,8359 60,5399 62,579 48,4107 46,9689 47,6198

0,04882 0,04918

0,091052233 0,090742233 0,090102233 0,074305567

PC

0,06701

PETG

0,076302233

Table 3. Average values from the tensile strength analysis

F ��� ���� Δl ��� ���� σ ��� ����� ε ��� 600,86 1,45 60,09 0,05

������� 439,64

PLA

PC

616,52 476,66

2,72 2,18

61,65 47,67

0,09 0,07

305,89 269,02

PETG

5.2. Flexural strength Similar results were obtained during the flexural bending test. The maximal stroke was achieved with the PC and PETG specimens, while the PLA plastic specimens showed a clear break before the maximal stroke as it is presented in Figure 6. The results for all tested specimens for the three materials are presented in Table 4 and Table 5.